Dublin

 

As well as the Book of Kells, Trinity College in Dublin has possibly the world's greatest collection of illuminated Celtic manuscripts. Which is just, given The Emerald Isle's huge influence on the growth of post-Roman Christianity and thus Anglo-Celtic works through the likes of Saints Columba, Aidan, St Piran and Ia. Here you can find the Books of Armagh, Durrow, Dimma, Mulling and The Garland of Howth and many more. To learn more, read here: